Mr Sandman: Good to hear that Boulter could cut and ship to you at a reasonable price. He has a good inventory of hard to find materials.
The difference in strengh between marine grade meranti plywood and exterior grade plywood of the same thickness is substantial.
The 1/2" or 12mm has 9 plys and is by far stronger than exterior grade or marine grade fir plywood. I would say it is almost twice as strong.
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